bus depot vs coach station

bus depot and coach station both are nouns.

Word	Noun	Adjective	Verb	Adverb
bus depot	Yes	No	No	No
coach station	Yes	No	No	No

As nouns, bus depot and coach station are synonyms defined as:

Other synonyms of bus depot include bus station, bus terminal.

bus depot (noun)	coach station (noun)
a terminal that serves bus passengers	a terminal that serves bus passengers